不规则窗口

╰+攻爆jí腚メ 2021-11-23 07:38 281阅读 0赞

![20190726094358893.png][]

#ifndef MYWIDGET_H
    #define MYWIDGET_H
    
    #include <QWidget>
    
    namespace Ui {
    class MyWidget;
    }
    
    class MyWidget : public QWidget
    {
        Q_OBJECT
    
    public:
        explicit MyWidget(QWidget *parent = 0);
        ~MyWidget();
    
    protected:
        void paintEvent(QPaintEvent *);
    
        void mouseMoveEvent(QMouseEvent *e);
    
        void mousePressEvent(QMouseEvent *e);
    private:
        Ui::MyWidget *ui;
    
        QPoint p;
    };
    
    #endif // MYWIDGET_H

![20190726094443317.png][]

#include "mywidget.h"
    #include "ui_mywidget.h"
    #include <QPainter>
    #include <QMouseEvent>
    MyWidget::MyWidget(QWidget *parent) :
        QWidget(parent),
        ui(new Ui::MyWidget)
    {
        ui->setupUi(this);
        //去窗口表框
        setWindowFlags(Qt::FramelessWindowHint | windowFlags());
        //把窗口背景设置为透明
        setAttribute(Qt::WA_TranslucentBackground);
    
    }
    
    MyWidget::~MyWidget()
    {
        delete ui;
    }
    
    void MyWidget::paintEvent(QPaintEvent *)
    {
        QPainter p(this);
        p.drawPixmap(0,0,QPixmap("://C:/Users/Administrator/Desktop/Image/9.jpg"));
    }
    
    void MyWidget::mousePressEvent(QMouseEvent *e)
    {
        if(e->button() == Qt::RightButton)
        {
            //如果是右键
            close();
         }
        else if(e->button() == Qt::LeftButton)
        {
            //求坐标差值
            //当前点击坐标-窗口左上角坐标
            p = e->globalPos() - this ->frameGeometry().topLeft();
        }
    }
    
    void MyWidget::mouseMoveEvent(QMouseEvent *e)
    {
        if(e->buttons() & Qt::LeftButton)
        {
            move(e->globalPos() - p);
        }
    }

###   效果： ###

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3pzMTM0MjA4NDc3Ng_size_16_color_FFFFFF_t_70][]

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3pzMTM0MjA4NDc3Ng_size_16_color_FFFFFF_t_70 1][]

[20190726094358893.png]: /images/20211122/5d2dd391e397462ebd85dd1e000f3614.png
[20190726094443317.png]: /images/20211122/0536ceb86d9540d3b87847a58f2b9d57.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3pzMTM0MjA4NDc3Ng_size_16_color_FFFFFF_t_70]: /images/20211122/e204ff12673c4820ae349362e4c45f3b.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3pzMTM0MjA4NDc3Ng_size_16_color_FFFFFF_t_70 1]: /images/20211122/8129ee42bc4e40cfaa242f39613380d9.png